Latent awareness: Early conscious access to motor preparation processes is linked to the readiness potential
| Autor: | Yong-Wook Kim, Chang-Hwan Im, Elisabeth Parés-Pujolràs, Patrick Haggard |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Volition Consciousness Cognitive Neuroscience Contingent Negative Variation Intention 050105 experimental psychology Task (project management) Young Adult 03 medical and health sciences 0302 clinical medicine Humans Visual attention Attention 0501 psychology and cognitive sciences Recall 05 social sciences Brain Electroencephalography Negativity effect Awareness Voluntary action Neurology Visual Perception Female Psychology Psychomotor Performance 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | NeuroImage. 202:116140 |
| ISSN: | 1053-8119 |
| Popis: | An experience of intention to move accompanies execution of some voluntary actions. The Readiness Potential (RP) is an increasing negativity over motor brain areas prior to voluntary movement. Classical studies suggested that the RP starts before intention is consciously accessed as measured by offline recall-based reports, yet the interpretation of the RP and its temporal relation to awareness of intention remain controversial. We designed a task in which self-paced actions could be interrupted at random times by a visual cue that probed online awareness of intention. Participants were instructed to respond by pressing a key if they felt they were actively preparing a self-paced movement at the time of the cue (awareness report), but to ignore the cue otherwise. We show that an RP-like activity was more strongly present before the cue for probes eliciting awareness reports than otherwise. We further show that recall-based reports of the time of conscious intention are linked to visual attention processes, whereas online reports elicited by a probe are not. Our results suggest that awareness of intention is accessible at relatively early stages of motor preparation and that the RP is specifically associated with this conscious experience. |
| Databáze: | OpenAIRE |
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